Firefighters put out the blaze within the hour. No injuries were reported, although around 30 passengers said they felt unwell, according to state-owned broadcaster NHK.

Japanese television broadcast live images of at least two fire trucks blanketing the left-side engine and almost the entire side of the Boeing 777 with what appeared to be white foam as smoke came out the back of the engine.

A large crowd was gathered on a wide grassy area next to the runway at Haneda Airport and near the choppy waters of Tokyo Bay. Emergency chutes were deployed from the plane's doors.

All 302 passengers and 17 crewmembers were evacuated, aid Kyosuke Okada, a government official assigned to Haneda Airport.

Flight 2708 was headed to Seoul.

Okada said the cause of the fire was unknown. The aircraft is powered by two Pratt & Whitney PW4000 engines.

Haneda Airport handles around 550 flights a day with around 75 million passengers passing through the hub last year, making it one of the world's busiest airports.

RELATED: Photos believed to be Egypt Air Flight 804 wreckage are released

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Photos believed to be EgyptAir Flight 804 wreckage are released (5/21)

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Korean Air jet catches fire at Tokyo's Haneda airport

ALEXANDRIA, EGYPT - MAY 21: Some of the passengers' belongings and parts of the wreck of EgyptAir flight MS804 are seen as more wreckage found north of Alexandria, in Egypt on May 21, 2016. EgyptAir flight MS804 crashed with 56 passengers and 10 crew on board on May 19.
(Photo by Egyptian Armed Forces / Handout /Anadolu Agency/Getty Images)

ALEXANDRIA, EGYPT - MAY 21: Some of the passengers' belongings and parts of the wreck of EgyptAir flight MS804 are seen as more wreckage found north of Alexandria, in Egypt on May 21, 2016. EgyptAir flight MS804 crashed with 56 passengers and 10 crew on board on May 19.
(Photo by Egyptian Armed Forces / Handout /Anadolu Agency/Getty Images)

ALEXANDRIA, EGYPT - MAY 21: Some of the passengers' belongings and parts of the wreck of EgyptAir flight MS804 are seen as more wreckage found north of Alexandria, in Egypt on May 21, 2016. EgyptAir flight MS804 crashed with 56 passengers and 10 crew on board on May 19.
(Photo by Egyptian Armed Forces / Handout /Anadolu Agency/Getty Images)

ALEXANDRIA, EGYPT - MAY 21: Some of the passengers' belongings and parts of the wreck of EgyptAir flight MS804 are seen as more wreckage found north of Alexandria, in Egypt on May 21, 2016. EgyptAir flight MS804 crashed with 56 passengers and 10 crew on board on May 19.
(Photo by Egyptian Armed Forces / Handout /Anadolu Agency/Getty Images)

ALEXANDRIA, EGYPT - MAY 21: Some of the passengers' belongings and parts of the wreck of EgyptAir flight MS804 are seen as more wreckage found north of Alexandria, in Egypt on May 21, 2016. EgyptAir flight MS804 crashed with 56 passengers and 10 crew on board on May 19.
(Photo by Egyptian Armed Forces / Handout /Anadolu Agency/Getty Images)

This still image taken from video posted Saturday, May 21, 2016, on the official Facebook page of the Egyptian Armed Forces spokesman shows personal belongings and other wreckage of EgyptAir flight 804. Smoke was detected in multiple places on EgyptAir flight 804 moments before it plummeted into the Mediterranean, but the cause of the crash that killed all 66 on board remains unclear, the French air accident investigation agency said on Saturday. (Egyptian Armed Forces via AP)

This still image taken from video posted Saturday, May 21, 2016, on the official Facebook page of the Egyptian Armed Forces spokesman shows a piece of carpet from the wreckage of EgyptAir flight 804. Smoke was detected in multiple places on EgyptAir flight 804 moments before it plummeted into the Mediterranean, but the cause of the crash that killed all 66 on board remains unclear, the French air accident investigation agency said on Saturday. (Egyptian Armed Forces via AP)

This still image taken from video posted Saturday, May 21, 2016, on the official Facebook page of the Egyptian Armed Forces spokesman shows some personal belongings and other wreckage from EgyptAir flight 804. Smoke was detected in multiple places on EgyptAir flight 804 moments before it plummeted into the Mediterranean, but the cause of the crash that killed all 66 on board remains unclear, the French air accident investigation agency said on Saturday. (Egyptian Armed Forces via AP)